Clarence a



Patented Oct. 19,1897

0. A.'LINDSAY. PHOTOGRA'PHIO PLATE WRAPPER.

(Model.)

lvrrnn STATES PATENT anion.

CLARENCE A. LINDSAY, OF WASHINGTON, DISTRICT OF COLUMBIA.

PHOTOGRAPHlC-PLATE WRAPPER.

SPECIFICATION forming part of Letters Patent No. 592,148, dated October 19,1897.

Application filed May 8, 1897.

To ctZZ whom it may concern:

Be it known that I, CLARENCE A. LINDSAY, a citizen of the United States, residing at W Vashingtomin the District of Columbia, have invented certain new and useful Improvements in Photographic-Plate Light-Proof Envelops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the art of photography, and has especial reference to means for protecting photographic plates against light while being placed in a plate-holder, so that they can be handled in daylight, thus avoiding the necessity of resorting to a dark room; and it consists in certain improvements which will be fully disclosed in the following specification and claims.

In the accompanying drawings, which form part of this specification, Figure 1 represents a plan of the blank from which the envelop or wrapper is made; Fig. 2, a like view of the folded envelop; Fig. 3, a like View showing an enveloped photographic plate in a plateholder; Fig. 4, a like view showing one side or the front ofthe envelop partly removed or detached and exposing part of the plate; Fig. 5, a vertical section, on an enlarged scale, showing a photographic plate in the envelop or wrapper; Figs. 6 and 7, a like view of part of the same on an exaggerated scale, and Fig. 8 a like view of a modified construction of the light-excluding flap or shield.

Reference being had to the drawings and the letters thereon, A indicates the blank, made of black paper or other light-proof material used by photographers for excluding light from sensitive plates, films, or paper, and from which blank an envelop or wrapper B is made to inclose a photographic plate or film against light until it has been placed in a plate-holder and the plate-holder in a camera ready for exposure for the purpose of taking an impression on the sensitive plate or film. The blank is creased on the lines a a, near the upper and lower ends of the blank, and indented, scored, or weakened on the lines 1) b to cause the material to bend readily in folding and the indentures or scores to Serial No. 635,6 '78. (ModeL) cause the material to break or tear readily in removing one side or the front 0 of the envelop after the enveloped plate has been placed in a plate-holder and the plate-holder is in the camera ready to make an exposure of the plate. To start the end of the detachable or removable side or front 0 of the envelop, a transverse slit or incision d is made across the blank and short longitudinal slits or incisions e e at each end of. the slit (1, as shown in Fig. 1, and to tear or remove the side or front 3 of the envelop a strap f is bent over the front at g and secured to the inside of the front, then bent outward and the end of the strap continued beyond the opposite end of the envelop, as shown in Fig. 2. The innerend of the strap f is preferably made as wide as the slit d to form a strong connection with the front of the envelop and to guide the free end when pulling the front out of the envelop under the end rail of the plate-holder, and the strap extends beyond the end of the envelop to be seized by the fingers of the operator as it protrudes under the rail of the plate-holder and beyond the side of a camera. v

To prevent light entering the slits d and e e, a flap or shield h is secured to the blank to extend across the front of the envelop and over the slits, that portion of the shield extending over the slits being free from the blank. This shield is on the outside of the envelop, and on the inside a like flap'or shield c is secured in like manner and extends over the slits, as shown in Figs. 5, 6, and 7, and in Fig. 8 the inner flap or shield is omitted.

The envelop may be made as an article of manufacture and supplied to manufacturers of photographic plates, or the plates may be enveloped by folding a blank upon them. In the former instance the flap at one end of the envelop is left unpasted to insert the plate in the envelop and after the plate has been inserted the flap is folded over the end of the plate and secured by paste.

The plate having been inclosed in an envelop, it is packed for the market and subsequently placed in a plate-holder D of any preferred construction, with the strap f under the rail Z of the holder and extending beyond the rail. The plate-holder with its enveloped plate is then placed in a camera and the removable front of the envelop torn off and the plate exposed, after which the plate-holder slide is inserted in the usual manner.

Having thus full y described my invention, What I claim is- 1. A light-proof envelop or Wrapper for photographic plates having a detachable or removable side or front of the same material as the body thereof and having a transverse slit at one end and means for exclnding'light therefrom and a pulling-piece attached to one end of the front and extending beyond the opposite end.

2. A light-proof envelop or Wrapper for photographic plates having a detachable or removable side or front provided with transverse and longitudinal slits or incisions at one end, means for excluding light through the slits and a pulling-piece attached to the front, adjacent to the transverse slit and extending to the opposite end of the envelop.

3. A light-proof envelop or wrapper for photographic plates having a detachable or removable side or front and a pnlling-pieee secured to one end of said side and ext ending to the opposite end.

:4. A light-proof envelop or Wrapper for photographic plates provided with a delaehable or removable side or front and having a transverse slit or incision at one end thereof and a pulling-piece secured to said end of the front and. extending to the opposite end. of the envelop.

5. A light-proof envelop or Wrapper for photographic plates having a detachable or removable side or front and having a transverse slit or incision at one end and prmided. with a light-excluding :ilap or shield extending over the slit and a separate pulling-piece attached to one end of the front of the envelop.

U. A ligl'it-proof envelop or wrapper for photographicplates having a transverse slit at one end and provided. with light-cezehnl in shields on the inside and Olli'fihiO of said slit to exclude light therefrom and a pnllingpieen extending from one end, to and beyond the opposite end of the envelop.

In testimony whereof I affix my signal are in presence of two witnesses.

Qlnrltlfilji ii A. l'ilhlilr fi Wit nesses:

D. C. Rieinonn, l). Wnnnnn Name n l i. 

